CN112088556A

CN112088556A - Signal transmission method, relay equipment and network equipment

Info

Publication number: CN112088556A
Application number: CN201880093109.0A
Authority: CN
Inventors: 卢前溪; 林晖闵
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2018-05-11
Filing date: 2018-05-11
Publication date: 2020-12-15
Anticipated expiration: 2038-05-11
Also published as: CN112088556B; WO2019213959A1; TW202005321A

Abstract

The embodiment of the application discloses a method for transmitting signals, relay equipment and network equipment, wherein the method comprises the following steps: the method comprises the steps that first relay equipment acquires first information, wherein the first information is used for indicating transmission resources of a first signal; the first relay device transmits the first signal according to the first information. The method, the relay equipment and the network equipment in the embodiment of the application are beneficial to improving the performance of signal transmission.

Description

Signal transmission method, relay equipment and network equipment

Technical Field

The embodiments of the present application relate to the field of communications, and in particular, to a method for transmitting a signal, a relay device, and a network device.

Background

In a Long Term Evolution (LTE) system, Backhaul links (Backhaul) between base stations and between a base station and a core network use a wired connection manner, which brings great deployment difficulty and high network deployment cost to operators, and in order to solve the above problems, a third Generation Partnership Project (3 GPP) starts a research on a wireless relay technology in an LTE-a standardization stage to provide a solution for a wireless Backhaul link.

In a relay system, a relay node is a child node of a parent node, so that the relay node needs to receive a signal issued by the parent node; meanwhile, the relay node is a parent node of its child node, and therefore needs to transmit a signal to the child node.

How to coordinate the transmission resources of the above signals in the relay system is a problem to be solved.

Disclosure of Invention

In view of this, embodiments of the present application provide a method for transmitting a signal, a relay device, and a network device, which are beneficial to improving performance of signal transmission.

In a first aspect, a method for transmitting a signal is provided, where the method is applied in a relay system, and the method includes: the method comprises the steps that first relay equipment acquires first information, wherein the first information is used for indicating transmission resources of a first signal; the first relay device transmits the first signal according to the first information.

In a possible implementation manner, the relay system includes a plurality of hierarchies, and the first information is used to indicate a correspondence relationship between each hierarchy of the plurality of hierarchies and a transmission resource of the first signal, or the first information is used to indicate a transmission resource of the first signal allocated to the first relay device; the first relay device transmits the first signal according to the first information, and includes: the first relay device transmits the first signal on the transmission resource of the first signal corresponding to the hierarchy of the first relay device in the relay system according to the first information, or the first relay device transmits the first signal on the transmission resource of the first signal allocated to the first relay device according to the first information.

In a possible implementation manner, the acquiring, by the first relay device, the first information includes: the first relay device receives the first information sent by a second relay device or a network device, where the second relay device is a parent node of the first relay device, or the first information is pre-stored in the first relay device.

In one possible implementation, the method further includes: the first relay device determines the second relay device.

In one possible implementation, the method further includes: the first relay device determining a hierarchy of the second relay device in the relay system; the first relay device determines a hierarchy next to a hierarchy in which the second relay device is located as a hierarchy of the first relay device in the relay system.

In one possible implementation, the determining, by the first relay device, the hierarchy of the second relay device in the relay system includes: and the first relay equipment determines the hierarchy of the second relay equipment in the relay system according to the first information and the transmission resource of the first signal sent by the second relay equipment.

In one possible implementation manner, the first signal is a synchronization signal, and the determining, by the first relay device, a hierarchy of the second relay device in the relay system includes: and the first relay equipment determines the hierarchy of the second relay equipment in the relay system according to the corresponding relation between the synchronization sequence and each hierarchy in the relay system and the synchronization sequence corresponding to the synchronization signal sent by the second relay equipment.

In one possible implementation manner, the determining, by the first relay device, the second relay device includes: the first relay device receiving at least one of the first signals, the at least one first signal being transmitted by at least one relay device; the first relay device determines the second relay device according to the at least one first signal.

In one possible implementation manner, the at least one first signal includes K first signals, where K is a positive integer greater than or equal to 1, and the determining, by the first relay device, a second relay device according to the at least one first signal includes: the first relay device measures the strength of the K first signals; the first relay device determines the second relay device according to the strength of the K first signals.

In one possible implementation manner, the at least one first signal includes K first signals, where K is a positive integer greater than or equal to 1, and the determining, by the first relay device, a second relay device according to the at least one first signal includes: the first relay equipment determines at least one hierarchy where the relay equipment sending the K first signals is located according to the K first signals; the first relay device determines the second relay device according to the size of the at least one hierarchy level.

In one possible implementation manner, the at least one first signal includes K first signals, where K is a positive integer greater than or equal to 1, and the determining, by the first relay device, a second relay device according to the at least one first signal includes: the first relay equipment determines at least one hierarchy where the relay equipment sending the K first signals is located according to the K first signals; the first relay device determining a first tier from the at least one tier; if J relay devices of the first hierarchy transmit M first signals of the K first signals, the first relay device measures intensities of the M first signals, where M is a positive integer less than or equal to K, and J is a positive integer less than or equal to M; and the first relay equipment determines the second relay equipment according to the strength of the M first signals.

In a possible implementation manner, the first signal is a synchronization signal, and the first relay device transmits the first signal according to the first information, including: and the first relay equipment sends the synchronization sequence corresponding to the hierarchy in which the first relay equipment is positioned according to the first information and the corresponding relation between the synchronization sequence and each hierarchy in the relay system.

In one possible implementation, the first information is used to indicate transmission resources of the first signal allocated to the first relay device, and the method further includes: the first relay device receives second information sent by the second relay device, where the second information is used to indicate a transmission resource of the first signal of at least one hierarchy above a hierarchy where the first relay device is located, and the second relay device is a parent node of the first relay device.

In a possible implementation manner, the first information is carried in a broadcast message, a radio resource control RRC signaling, or a downlink control information DCI.

In one possible implementation, the first signal is a synchronization signal, a tracking reference signal TRS, or a channel state information-reference signal CSI-RS.

In a second aspect, a method for transmitting a signal is provided, where the method is applied in a relay system, and the method includes: the second relay device transmits first information to the first relay device, the first information indicating transmission resources of the first signal.

In one possible implementation, the second relay device is a parent node of the first relay device.

In a possible implementation manner, the relay system includes a plurality of levels, and the first information is used to indicate transmission resources of the first signal corresponding to each of the plurality of levels, or the first information is used to indicate transmission resources of the first signal allocated to the first relay device.

In one possible implementation, the first information is used to indicate transmission resources of the first signal allocated to the first relay device, and the method further includes: the second relay device sends second information to the first relay device, where the second information is used to indicate transmission resources of the first signal of at least one level above a level where the first relay device is located.

In a possible implementation manner, the sending, by the second relay device, the first information to the first relay device includes: the second relay device sends the first information to the first relay device through a broadcast message, a Radio Resource Control (RRC) signaling or Downlink Control Information (DCI).

In a third aspect, a method for transmitting a signal is provided, where the method is applied in a relay system, and the method includes: the network equipment sends first information to the first relay equipment, wherein the first information is used for indicating that the first information is used for indicating the transmission resources of the first signal.

In one possible implementation manner, the sending, by the network device, the first information to the first relay device includes: the network device sends the first information to the first relay device through a broadcast message, a Radio Resource Control (RRC) signaling or Downlink Control Information (DCI).

In a fourth aspect, a relay device is provided for performing the method of the first aspect or any possible implementation manner of the first aspect. In particular, the relay device comprises means for performing the method of the first aspect or any possible implementation manner of the first aspect.

In a fifth aspect, a relay device is provided for performing the method of the second aspect or any possible implementation manner of the second aspect. In particular, the relay device comprises means for performing the method of the second aspect described above or any possible implementation of the second aspect.

A sixth aspect provides a network device configured to perform the method of the third aspect or any possible implementation manner of the third aspect. In particular, the network device comprises means for performing the method of the third aspect or any possible implementation manner of the third aspect.

In a seventh aspect, a relay device is provided, which includes: memory, processor, input interface and output interface. The memory, the processor, the input interface and the output interface are connected through a bus system. The memory is configured to store instructions and the processor is configured to execute the instructions stored by the memory for performing the method of the first aspect or any possible implementation manner of the first aspect.

In an eighth aspect, there is provided a relay apparatus comprising: memory, processor, input interface and output interface. The memory, the processor, the input interface and the output interface are connected through a bus system. The memory is configured to store instructions and the processor is configured to execute the instructions stored by the memory for performing the method of the second aspect or any possible implementation manner of the second aspect.

In a ninth aspect, there is provided a network device, comprising: memory, processor, input interface and output interface. The memory, the processor, the input interface and the output interface are connected through a bus system. The memory is configured to store instructions and the processor is configured to execute the instructions stored by the memory for performing the method of the third aspect or any possible implementation manner of the third aspect.

A tenth aspect provides a chip for implementing the method in the first aspect or any possible implementation manner of the first aspect, or the method in the second aspect or any possible implementation manner of the second aspect, or the method in any possible implementation manner of the third aspect or any possible implementation manner of the third aspect.

Specifically, the chip includes: a processor configured to call and run a computer program from a memory, so that a device on which the chip is installed executes a method in the first aspect or any possible implementation manner of the first aspect, or a method in the second aspect or any possible implementation manner of the second aspect, or a method in any possible implementation manner of the third aspect.

In an eleventh aspect, a computer storage medium is provided for storing a computer program for performing the method of the first aspect or any possible implementation manner of the first aspect, or the method of the second aspect or any possible implementation manner of the second aspect, or the method of the third aspect or any possible implementation manner of the third aspect. Computer software instructions for use comprising a program designed to perform the above aspects.

In a twelfth aspect, there is provided a computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of the first aspect or any of the alternative implementations of the first aspect, or the method of the second aspect or any of the alternative implementations of the second aspect, or the method of any of the possible implementations of the third aspect or the third aspect.

In a thirteenth aspect, there is provided a communication system including a first relay apparatus and a second relay apparatus; wherein the content of the first and second substances,

the first relay equipment is used for acquiring first information, wherein the first information is used for indicating transmission resources of a first signal and sending the first signal according to the first information;

the network device is configured to send first information to a first relay device, where the first information is used to indicate a transmission resource of a first signal.

Specifically, the first relay device is configured to perform the method in each implementation manner of the first aspect, and the second relay device is configured to perform the method in each implementation manner of the second aspect.

In a fourteenth aspect, there is provided a communication system comprising a first relay device and a network device;

Specifically, the first relay device is configured to execute the method in each implementation manner of the first aspect, and the network device is configured to execute the method in each implementation manner of the third aspect.

These and other aspects of the present application will be more readily apparent from the following description of the embodiments.

Drawings

Fig. 1 is a schematic diagram illustrating an application scenario according to an embodiment of the present application.

Fig. 2 shows a schematic block diagram of a method of transmitting a signal of an embodiment of the present application.

Fig. 3 shows a hierarchy distribution diagram of a relay network according to an embodiment of the present application.

Fig. 4 shows another schematic block diagram of a method of transmitting a signal of an embodiment of the present application.

Fig. 5 shows a further schematic block diagram of a method of transmitting a signal of an embodiment of the application.

Fig. 6 shows a schematic block diagram of a relay device according to an embodiment of the present application.

Fig. 7 shows another schematic block diagram of a relay device according to an embodiment of the present application.

Fig. 8 shows a schematic block diagram of a network device of an embodiment of the application.

Fig. 9 shows a further schematic block diagram of a relay device of an embodiment of the application.

Fig. 10 shows a further schematic block diagram of a relay device of an embodiment of the application.

Fig. 11 shows another schematic block diagram of a network device of an embodiment of the application.

Fig. 12 shows a schematic block diagram of a chip of an embodiment of the application.

FIG. 13 shows another schematic block diagram of a chip of an embodiment of the present application.

Fig. 14 shows yet another schematic block diagram of a chip of an embodiment of the present application.

Fig. 15 shows a schematic block diagram of a communication system of an embodiment of the present application.

Fig. 16 shows a schematic block diagram of a communication system of an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.

It should be understood that the technical solutions of the embodiments of the present application may be applied to various communication systems, for example: LTE System for long term evolution, LTE Frequency Division Duplex (FDD) System, LTE Time Division Duplex (TDD), Universal Mobile Telecommunications System (UMTS), New Radio (NR), or future 5G System evolution.

A terminal device in the embodiments of the present application may refer to a User Equipment (UE), an access terminal, a subscriber unit, a subscriber station, a mobile station, a remote terminal, a mobile device, a User terminal, a wireless communication device, a User agent, or a User Equipment. The access terminal may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with Wireless communication function, a computing device or other processing device connected to a Wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a future 5G Network or a terminal device in a future evolved Public Land Mobile Network (PLMN), and the like, and the embodiments of the present application are not limited thereto.

The Network device in this embodiment may be a device for communicating with a terminal device, where the Network device may be a base station (NodeB, NB) in a WCDMA system, an evolved node b (eNB or eNodeB) in an LTE system, a wireless controller in a Cloud Radio Access Network (CRAN) scenario, or the Network device may be a relay station, an Access point, a vehicle-mounted device, a wearable device, a Network device in a future 5G Network, a Network device in a future evolved PLMN Network, or the like, and the embodiment of the present application is not limited.

In an LTE system, backhaul links between base stations and between a base station and a core network use a wired connection mode, which brings great deployment difficulty and high network deployment cost to operators.

In a Relay system, a Relay Node (RN) is wirelessly connected to an eNB cell to which the Relay Node belongs, and the eNB to which the Relay Node belongs is called an anchor base station (DeNB). The network architecture of the relay system may be as shown in fig. 1, and the network architecture 100 may include an anchor node 110, that is, a DeNB, where the anchor node 110 may be an access network node or may also be a core network node. The network architecture 100 may also include at least one relay device 120 and a terminal device 130. Wherein, the network architecture mainly comprises 3 wireless links: a Backhaul link between the RN and the DeNB, an Access link between the UE and the RN, and a Direct link between the UE and the eNB.

In the relay system, a node at the upper level of a certain node is also called a parent node, and a node at the lower level thereof is also called a child node. As shown in fig. 1, for RN1, DeNB is the parent node, RN2 is the child node, and for RN2, RN1 is the parent node, and UE is the child node.

It should be understood that the embodiments of the present application are not limited to the relay expansion between network nodes shown in fig. 1, and may also be applied to the relay expansion between terminal devices, for example, there may be one or more relay nodes between a terminal device and a terminal device.

Fig. 2 shows a schematic block diagram of a method 200 of transmitting a signal of an embodiment of the application. The method 200 is applied to a relay system, as shown in fig. 2, the first relay device may be the relay node 120 shown in fig. 1, and the method 200 includes some or all of the following:

s210, the first relay equipment acquires first information, wherein the first information is used for indicating transmission resources of a first signal;

s220, the first relay device transmits the first signal according to the first information.

First, it should be noted that: the first Signal may be any one of a synchronization Signal, a Channel State Information Reference Signal (CSI-RS), or a Tracking Reference Signal (TRS), and may be a broadcast Signal, data, or control signaling. It should be understood that the following embodiments are described by taking the first signal as the synchronization signal as an example, but the embodiments of the present application are not limited thereto. The relay system of the embodiment of the application can support multi-hop or support multiple hierarchies.

In both LTE and NR systems, a terminal or other devices acquire time-frequency synchronization of a network by searching synchronization signals of the system and access the system. In a relay system, a relay device is a child node of a parent node, so that a synchronization signal of the parent node needs to be searched to access the system of the parent node; meanwhile, the relay device is a parent node of its child node, and therefore needs to transmit a synchronization signal to enable the child node to access the relay system. And, for the multi-hop relay system, the node of the lower level can access to the relay system of the upper level or the relay system of the higher level. Taking fig. 3 as an example, the relay system includes four levels, where level 1 is a DeNB, levels 2, 3, and 4 are relays, and RN3 may access to a relay device RN1 or RN2 in a previous level, or may access to a node in a higher level, such as a base station, and similarly, RN4 may access to RN3 in a previous level, or RN2 in a higher level. In fig. 3, solid lines represent direct links, while dashed lines represent alternative links. Due to the limitation of half duplex, the relay device cannot transmit the synchronization signal at the same time when receiving the synchronization signal of the previous stage. How the relay device acquires the synchronization resource to transmit the synchronization signal to the child node is a problem to be solved. Specifically, in this embodiment of the present application, the first relay device may obtain first information, where the first information may be used to indicate a synchronization resource, and then the first relay device may naturally acquire a resource for sending a synchronization signal according to the first information, and may further send the synchronization signal. For example, the network or the system may pre-configure the number of the layers of the relay system in advance (the relay system may include a plurality of layers), or pre-configure the synchronization resource corresponding to each layer in advance, that is, the first information is used to indicate the synchronization resource corresponding to each layer in the relay system. Then, when the first relay device acquires the first information and determines the hierarchy where the relay device is located in the relay system, the first relay device may determine the synchronization resource corresponding to the first relay device. For another example, the network or the system may not pre-configure the corresponding relationship between each hierarchy in the relay system and the synchronization resource in advance, and the relay device or the network device at the previous stage may dynamically allocate the synchronization resource to the relay device at the next stage, and then may send the synchronization signal according to the allocated synchronization resource.

Therefore, the method for transmitting the signal is beneficial to improving the performance of signal transmission.

Optionally, in this embodiment of the present application, the relay system includes a plurality of levels, and the first information is used to indicate a correspondence between each of the plurality of levels and a transmission resource of the first signal, or the first information is used to indicate a transmission resource of the first signal allocated to the first relay device; the first relay device transmits the first signal according to the first information, and includes: the first relay device transmits the first signal on the transmission resource of the first signal corresponding to the hierarchy of the first relay device in the relay system according to the first information, or the first relay device transmits the first signal on the transmission resource of the first signal allocated to the first relay device according to the first information.

Specifically, the first Information may be preconfigured to the first relay device by the network or the system, and for example, the first Information may be sent to the first relay device through a broadcast message, Radio Resource Control (RRC) signaling, and Downlink Control Information (DCI), or may be pre-stored in the first relay device. Once the first relay device knows the hierarchy where the first relay device is located in the relay system, the first relay device may further obtain the synchronization resource corresponding to the hierarchy where the first relay device is located by searching for the corresponding relationship between the hierarchy indicated by the first information and the synchronization resource, that is, the first relay device may send the synchronization signal on the synchronization resource corresponding to the hierarchy where the first relay device is located. Or after acquiring the synchronization resource allocated to the first relay device according to the first information, the first relay device may send the synchronization signal on the synchronization resource.

Alternatively, the first information may be sent to the first relay device by a second relay device or a network device, where the second relay device is a parent node of the first relay device.

Further, the first relay device needs to determine the second relay device.

Optionally, the determining, by the first relay device, the second relay device includes: the first relay device receiving at least one of the first signals, the at least one first signal being transmitted by at least one relay device; the first relay device determines the second relay device according to the at least one first signal. Specifically, the first relay device may determine the second relay device in the following manner.

Example 1: the at least one first signal includes K first signals, K being a positive integer greater than or equal to 1, the first relay device determines a second relay device according to the at least one first signal, including: if K is equal to 1, i.e. the first relay device receives a first signal, said first relay device treats the device sending the first signal as a second relay device, i.e. a parent node of the first relay device. If K is greater than 1, the first relay device measures the strength of the K first signals; the first relay device determines the second relay device according to the strength of the K first signals. Specifically, the first relay device may determine a node corresponding to a first signal with the highest strength among the K first signals as the second relay device, and the second relay device may also determine a node corresponding to a first signal with the second highest strength among the K first signals as the second relay device. The first relay device may also determine the second relay device in combination with other parameters and the strength of the K first signals. The embodiments of the present application do not limit this.

Example 2: the at least one first signal includes K first signals, K being a positive integer greater than or equal to 1, the first relay device determines a second relay device according to the at least one first signal, including: the first relay equipment determines at least one hierarchy where the relay equipment sending the K first signals is located according to the K first signals; the first relay device determines the second relay device according to the size of the at least one hierarchy level. Specifically, the first terminal device may determine, according to a correspondence between transmission resources of the K first signals and first information, that is, a correspondence between transmission resources and hierarchies, a hierarchy in which nodes that transmit the K first signals are located, where the hierarchy in which the nodes that transmit the K first signals are located may include multiple hierarchies, and then the first relay device may select a node of one hierarchy from the multiple hierarchies as a parent node. For example, a node with the highest or lowest hierarchy may be selected as a parent node, and the embodiments of the present application are not limited thereto.

Example 3: the at least one first signal includes K first signals, K being a positive integer greater than or equal to 1, the first relay device determines a second relay device according to the at least one first signal, including: the first relay equipment determines at least one hierarchy where the relay equipment sending the K first signals is located according to the K first signals; the first relay device determining a first tier from the at least one tier; if J relay devices of the first hierarchy transmit M first signals of the K first signals, the first relay device measures intensities of the M first signals, where M is a positive integer less than or equal to K, and J is a positive integer less than or equal to M; and the first relay equipment determines the second relay equipment according to the strength of the M first signals. Specifically, if the first relay device may include a plurality of nodes on a certain hierarchy selected according to at least one hierarchy where the relay device that transmits the K first signals is located, the first relay device may further perform selection by combining strengths of the first signals transmitted by the plurality of nodes. For example, a node corresponding to a first signal with the highest strength among the first signals transmitted by the plurality of nodes may be used as a parent node. In this embodiment of the present application, determining at least one hierarchy where the relay device that sends the K first signals is located according to the K first signals may be as shown in embodiment 1 and embodiment 2, and for brevity, details are not described here again.

Example 4: the at least one first signal includes K first signals, K being a positive integer greater than or equal to 1, the first relay device determines a second relay device according to the at least one first signal, including: the first relay equipment determines at least one hierarchy where the relay equipment sending the K first signals is located according to the K first signals; the first relay device determining a first tier from the at least one tier; if J relay devices of the first hierarchy transmit M first signals of the K first signals, the first relay device measures intensities of the M first signals, where M is a positive integer less than or equal to K, and J is a positive integer less than or equal to M; and the first relay equipment determines the second relay equipment according to the strength of the M first signals. Specifically, the first terminal device may further determine, according to the synchronization sequence corresponding to the K synchronization signals and the correspondence between the synchronization sequence and the hierarchy, a hierarchy where a node that transmits the K synchronization signals is located, where the hierarchy where the node that transmits the K synchronization signals is located may include multiple hierarchies, and then the first relay device may select one hierarchy from the multiple hierarchies as the first hierarchy, for example, a hierarchy with a highest hierarchy or a lowest hierarchy may be selected as the first hierarchy. Further, if one relay device is included in the first hierarchy, the relay device is selected as a parent node of the first relay device, that is, the second relay device, and if a plurality of relay devices are included in the first hierarchy, the strength of the first signal of the plurality of relay devices may be measured, and the relay device with the largest signal strength is selected as the parent node of the first relay device, that is, the second relay device. In this embodiment, different layers may correspond to different synchronization sequences, and in the same layer, different relay devices may also correspond to different synchronization sequences, which is not limited in this embodiment.

It should be noted that different synchronization sequences can be used to distinguish different relay devices on the same hierarchy level as well as different hierarchies in the relay system.

Optionally, if the first information is used to indicate a correspondence between each of the plurality of levels and the transmission resource of the first signal, the method further includes: the first relay device may determine a hierarchy of the first relay device in the relay system. Specifically, the first relay device may determine the hierarchy of the first relay device in the relay system in the following manner.

Example 5: the first relay device determines the hierarchy of the second relay device in the relay system according to the first information and the transmission resource of the first signal sent by the second relay device, wherein the second relay device is a parent node of the first relay device; the first relay device determines a hierarchy next to a hierarchy in which the second relay device is located as a hierarchy of the first relay device in the relay system.

The first relay device may access the system by searching for a synchronization signal. And determining the hierarchy of the first relay equipment in the relay system through the hierarchy of the relay equipment which sends the searched synchronous signal in the relay system. For example, if the first relay device searches for a synchronization signal and accesses the network of the relay device that transmitted the synchronization signal, the relay device that transmitted the synchronization signal is the parent node of the first relay device. The first relay device may determine, according to the correspondence indicated by the first information and the transmission resource of the synchronization signal, a hierarchy of a parent node of the first relay device in the relay system, and after determining the hierarchy of the parent node, the first relay device may use a next hierarchy as the hierarchy of the first relay device. For example, the maximum hierarchy supported by the relay system is N, which corresponds to hierarchies 0,1,2, and … N-1, where hierarchy 0 represents the highest hierarchy, N is a positive integer greater than or equal to 1, the hierarchy of the parent node is F, and F is an integer less than or equal to N-1, the hierarchy of the first relay device is (F +1), and if the hierarchy of the parent node is N-1, the hierarchy of the first relay device is 0, or the parent node is a node of the final hierarchy, and access of the child node is not allowed, which is not limited in this embodiment. Taking fig. 3 as an example, the relay system includes 4 hierarchies, and if the hierarchy of the parent node of the first relay device is 2, the hierarchy of the first relay device is 3.

Example 6: the network or the system may also preset a correspondence between a hierarchy and a synchronization sequence in advance, where each synchronization signal has a corresponding synchronization sequence, and the first relay device may determine, according to the synchronization sequence corresponding to the received synchronization signal and the correspondence, a hierarchy where a parent node of the first relay device is located. Further, the first relay device may determine a hierarchy next to the hierarchy in which the parent node is located as the hierarchy of the first relay device in the relay system.

Optionally, in this embodiment of the application, the first signal is a synchronization signal, and the sending, by the first relay device, the first signal according to the first information includes: and the first relay equipment sends the synchronization sequence corresponding to the hierarchy in which the first relay equipment is positioned according to the first information and the corresponding relation between the synchronization sequence and each hierarchy in the relay system.

If the mapping relationship between the synchronization sequence and the hierarchy is pre-stored in the first relay device, or if the network device pre-configures the mapping relationship between the synchronization sequence and the hierarchy for the first relay device, after the first relay device determines the synchronization resource for transmitting the synchronization signal to the child node, the synchronization sequence corresponding to the hierarchy where the first relay device is located may be transmitted on the determined synchronization resource.

Optionally, if the parent node or the network device dynamically allocates the transmission resource of the first signal to the first relay device, where the first information is used to indicate the transmission resource of the first signal allocated to the first relay device, the method further includes: the first relay device receives second information sent by the second relay device, where the second information is used to indicate transmission resources of the first signal of at least one level above a level where the first relay device is located.

The parent node may transmit the parent node and a transmission resource corresponding to a higher hierarchy than the parent node to the first relay device. For example, the hierarchy of the first relay device is G, and the parent node may transmit transmission resources of the (G-1), (G-2), … …, (G-M) (M is a positive integer less than or equal to G, and level 0 represents the highest hierarchy) hierarchy to the first relay device. M may be a configurable parameter. The first relay device can obtain the parent node and the higher-level transmission resource, and can avoid collision with the higher-level transmission resource when it allocates the transmission resource of the first signal to the child node.

Alternatively, the network or system may also consider transmission resources of different tiers to be staggered in time when pre-configuring transmission resources for each tier in the relay system. For example, transmission resource collision can be avoided by at least ensuring that transmission resources of two adjacent hierarchical levels are staggered in time.

Fig. 4 shows a schematic block diagram of a method 300 for transmitting a signal according to an embodiment of the present application, and as shown in fig. 4, the method 300 includes the following parts or all:

s310, the second relay device sends first information to the first relay device, where the first information is used to indicate transmission resources of the first signal.

It should be noted that the second relay device may be a parent node of the first relay device.

Optionally, in this embodiment of the application, the relay system includes a plurality of levels, and the first information is used to indicate a transmission resource of the first signal corresponding to each of the plurality of levels, or the first information is used to indicate a transmission resource of the first signal allocated to the first relay device.

Optionally, in this embodiment of the application, the first information is used to indicate a transmission resource of the first signal allocated to the first relay device, and the method further includes: the second relay device sends second information to the first relay device, where the second information is used to indicate transmission resources of the first signal of at least one level above a level where the first relay device is located.

Optionally, in this embodiment of the present application, the sending, by the second relay device, the first information to the first relay device includes: the second relay device sends the first information to the first relay device through a broadcast message, a Radio Resource Control (RRC) signaling or Downlink Control Information (DCI).

Optionally, in this embodiment of the present application, the first signal is a synchronization signal, a tracking reference signal TRS, or a channel state information-reference signal CSI-RS.

It should be understood that the interaction and related characteristics, functions, etc. between the second relay device and the first relay device described by the second relay device correspond to the related characteristics, functions, etc. of the first relay device. That is, what message a first relay device sends to a second relay device, the second relay device receives a corresponding message from the first relay device.

Fig. 5 shows a schematic block diagram of a method 400 of transmitting a signal according to an embodiment of the present application, and as shown in fig. 5, the method 400 includes the following parts or all:

s410, the network device sends first information to the first relay device, where the first information is used to indicate that the first information is used to indicate transmission resources of the first signal.

Optionally, in this embodiment of the present application, the sending, by the network device, the first information to the first relay device includes: and the network equipment sends the first information to the first relay equipment through broadcast messages, Radio Resource Control (RRC) signaling or Downlink Control Information (DCI).

It should be understood that the interaction and related characteristics, functions, etc. between the network device and the first relay device described by the network device correspond to the related characteristics, functions, etc. of the first relay device. That is, what message the first relay device sends to the network device, the network device receives the corresponding message from the first relay device.

It should also be understood that, in the various embodiments of the present application, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.

It should also be understood that the term "and/or" herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

Having described the method for transmitting a signal according to an embodiment of the present application in detail, an apparatus for transmitting a signal according to an embodiment of the present application will be described below with reference to fig. 6 to 11, and the technical features described in the method embodiment are applicable to the following apparatus embodiments.

Fig. 6 shows a schematic block diagram of a relay device 500 according to an embodiment of the present application. The relay apparatus is a first relay apparatus, and as shown in fig. 5, the relay apparatus 500 includes:

an obtaining unit 510, configured to obtain first information, where the first information is used to indicate a transmission resource of a first signal;

a sending unit 520, configured to send the first signal according to the first information.

Optionally, in this embodiment of the present application, the relay system includes a plurality of levels, and the first information is used to indicate a correspondence between each of the plurality of levels and a transmission resource of the first signal, or the first information is used to indicate a transmission resource of the first signal allocated to the first relay device; the sending unit is specifically configured to: and transmitting the first signal on the transmission resource of the first signal corresponding to the hierarchy of the first relay device in the relay system according to the first information, or transmitting the first signal on the transmission resource of the first signal allocated to the first relay device according to the first information.

Optionally, in this embodiment of the present application, the obtaining unit is specifically configured to: and receiving the first information sent by a second relay device or a network device, wherein the second relay device is a parent node of the first relay device, or the first information is pre-stored in the first relay device.

Optionally, in this embodiment of the present application, the relay device further includes: a first determining unit configured to determine the second relay device.

Optionally, in this embodiment of the present application, the relay device further includes: a second determining unit configured to determine a hierarchy of the second relay device in the relay system; a third determining unit, configured to determine a hierarchy next to the hierarchy in which the second relay device is located as the hierarchy of the first relay device in the relay system.

Optionally, in this embodiment of the application, the second determining unit is specifically configured to: and determining the hierarchy of the second relay equipment in the relay system according to the first information and the transmission resource of the first signal sent by the second relay equipment.

Optionally, in this embodiment of the application, the first signal is a synchronization signal, and the second determining unit is specifically configured to: and determining the hierarchy of the second relay equipment in the relay system according to the corresponding relation between the synchronization sequence and each hierarchy in the relay system and the synchronization sequence corresponding to the synchronization signal sent by the second relay equipment.

Optionally, in this embodiment of the application, the first determining unit is specifically configured to: at least one of the first signals is received, the at least one first signal being transmitted by at least one relay device, and the second relay device is determined based on the at least one of the first signals.

Optionally, in this embodiment of the application, the at least one first signal includes K first signals, where K is a positive integer greater than or equal to 1, and the determining, by the first determining unit, the second relay device according to the at least one first signal includes: measuring the intensity of the K first signals; and determining the second relay equipment according to the strength of the K first signals.

Optionally, in this embodiment of the application, the at least one first signal includes K first signals, where K is a positive integer greater than or equal to 1, and the determining, by the first determining unit, the second relay device according to the at least one first signal includes: determining at least one hierarchy where the relay equipment which is in one-to-one correspondence with the K first signals is located according to the K first signals; determining a first hierarchy from the at least one hierarchy; if J relay devices of the first level transmit M first signals in the K first signals, measuring the strength of the J first signals, wherein M is a positive integer less than or equal to K, and J is a positive integer less than or equal to M; and determining the second relay equipment according to the strength of the M first signals.

Optionally, in this embodiment of the present application, the first signal is a synchronization signal, and the sending unit is specifically configured to: and sending a synchronization sequence corresponding to the hierarchy where the first relay device is located according to the first information and the corresponding relation between the synchronization sequence and each hierarchy in the relay system.

Optionally, in this embodiment of the application, the first information is used to indicate a transmission resource of the first signal allocated to the first relay device, and the relay device further includes: a receiving unit, configured to receive second information sent by the second relay device, where the second information is used to indicate a transmission resource of the first signal of at least one hierarchy above a hierarchy where the first relay device is located, and the second relay device is a parent node of the first relay device.

Optionally, in this embodiment of the present application, the first information is carried in a broadcast message, a radio resource control RRC signaling, or a downlink control information DCI.

It should be understood that the relay device 500 according to the embodiment of the present application may correspond to a relay device in the embodiment of the method of the present application, and the above and other operations and/or functions of each unit in the relay device 500 are respectively for implementing a corresponding flow of the first relay device in the method of fig. 2, and are not described herein again for brevity.

Fig. 7 shows a schematic block diagram of a relay device 600 according to an embodiment of the present application. The relay device is applied to a relay system, the relay device is a first relay device, as shown in fig. 7, the relay device 600 includes:

a sending unit 610, configured to send first information to the first relay device, where the first information is used to indicate a transmission resource of the first signal.

Optionally, in this embodiment of the present application, the second relay device is a parent node of the first relay device.

Optionally, in this embodiment of the application, the first information is used to indicate a transmission resource of the first signal allocated to the first relay device, and the sending unit is further configured to: and sending second information to the first relay equipment, wherein the second information is used for indicating the transmission resources of the first signal of at least one level above the level where the first relay equipment is located.

Optionally, in this embodiment of the present application, the sending unit is specifically configured to: the second relay device sends the first information to the first relay device through a broadcast message, a Radio Resource Control (RRC) signaling or Downlink Control Information (DCI).

It should be understood that the relay device 600 according to the embodiment of the present application may correspond to a relay device in the embodiment of the method of the present application, and the above and other operations and/or functions of each unit in the relay device 600 are respectively for implementing a corresponding flow of the second relay device in the method of fig. 4, and are not described herein again for brevity.

Fig. 8 shows a schematic block diagram of a network device 700 of an embodiment of the application. As shown in fig. 8, the network device is applied to a relay system, and the network device 700 includes:

a sending unit 710, configured to send first information to the first relay device, where the first information is used to indicate that the first information is used to indicate a transmission resource of the first signal.

Optionally, in this embodiment of the present application, the sending unit is specifically configured to: the network device sends the first information to the first relay device through a broadcast message, a Radio Resource Control (RRC) signaling or Downlink Control Information (DCI).

It should be understood that the network device 700 according to the embodiment of the present application may correspond to the network device in the embodiment of the method of the present application, and the above and other operations and/or functions of each unit in the network device 700 are respectively for implementing the corresponding flow of the network device in the method of fig. 5, and are not described herein again for brevity.

As shown in fig. 9, an embodiment of the present application further provides a relay device 800, where the relay device 800 may be the relay device 500 in fig. 6, which can be used to execute the content of the first relay device corresponding to the method 200 in fig. 2. The relay device 800 shown in fig. 9 comprises a processor 810, and the processor 810 can call and run a computer program from a memory to implement the method in the embodiment of the present application.

Optionally, as shown in fig. 9, the relay device 800 may further include a memory 820. From the memory 820, the processor 810 can call and run a computer program to implement the method in the embodiment of the present application.

The memory 820 may be a separate device from the processor 810 or may be integrated into the processor 810.

Optionally, as shown in fig. 9, the relay device 800 may further include a transceiver 830, and the processor 810 may control the transceiver 830 to communicate with other devices, and specifically, may transmit information or data to the other devices or receive information or data transmitted by the other devices.

The transceiver 830 may include a transmitter and a receiver, among others. The transceiver 830 may further include one or more antennas.

Optionally, the relay device 800 may be a relay device in the embodiment of the present application, and the relay device 800 may implement a corresponding process implemented by the relay device in each method in the embodiment of the present application, which is not described herein again for brevity.

In a specific embodiment, the first receiving unit, the second receiving unit and the transmitting unit in the relay device 600 may be implemented by the transceiver 830 in fig. 9. The first determining unit, the second determining unit, the third determining unit, and the obtaining unit in the relay apparatus 600 may be implemented by the processor 810 in fig. 9.

As shown in fig. 10, an embodiment of the present application further provides a relay device 900, where the relay device 900 may be the relay device 600 in fig. 7, which can be used to execute the content of the second relay device corresponding to the method 300 in fig. 4. The relay device 900 shown in fig. 10 includes a processor 910, and the processor 910 can call and run a computer program from a memory to implement the method in the embodiment of the present application.

Optionally, as shown in fig. 10, the relay device 900 may further include a memory 920. From the memory 920, the processor 910 can call and run a computer program to implement the method in the embodiment of the present application.

The memory 920 may be a separate device from the processor 910, or may be integrated in the processor 910.

Optionally, as shown in fig. 10, the relay device 900 may further include a transceiver 930, and the processor 910 may control the transceiver 930 to communicate with other devices, and specifically, may transmit information or data to the other devices or receive information or data transmitted by the other devices.

The transceiver 930 may include a transmitter and a receiver, among others. The transceiver 930 may further include one or more antennas.

Optionally, the relay device 900 may be a relay device in the embodiment of the present application, and the relay device 900 may implement a corresponding process implemented by the relay device in each method in the embodiment of the present application, which is not described herein again for brevity.

In a specific embodiment, the transmitting unit in the relay device 700 may be implemented by the transceiver 930 in fig. 10.

As shown in fig. 11, an embodiment of the present application further provides a network device 1000, where the network device 1000 may be the network device 700 in fig. 8, which can be used to execute the content of the network device corresponding to the method 400 in fig. 5. The network device 1000 shown in fig. 11 includes a processor 1010, and the processor 1010 may call and execute a computer program from a memory to implement the method in the embodiment of the present application.

Optionally, as shown in fig. 11, the network device 1000 may further include a memory 1020. From the memory 1020, the processor 1010 may call and execute a computer program to implement the method in the embodiment of the present application.

The memory 1020 may be a separate device from the processor 1010 or may be integrated into the processor 1010.

Optionally, as shown in fig. 11, the network device 1000 may further include a transceiver 1030, and the processor 1010 may control the transceiver 1030 to communicate with other devices, and specifically, may transmit information or data to the other devices or receive information or data transmitted by the other devices.

The transceiver 1030 may include a transmitter and a receiver, among others. The transceiver 1030 may further include an antenna, and the number of antennas may be one or more.

Optionally, the network device 1000 may be a network device in the embodiment of the present application, and the network device 1000 may implement a corresponding process implemented by the network device in each method in the embodiment of the present application, which is not described herein again for brevity.

In a specific embodiment, the transmitting unit in the network device 700 may be implemented by the transceiver 1030 in fig. 11.

Fig. 12 is a schematic block diagram of a chip 2000 in accordance with an embodiment of the present application. The chip 2000 shown in fig. 12 includes a processor 2010, and the processor 2010 may call and execute a computer program from a memory to implement the method 200 in the embodiment of the present application.

Optionally, as shown in fig. 12, the chip 2000 may also include a memory 2020. From the memory 2020, the processor 2010 may call and execute a computer program to implement the method in the embodiment of the present application.

The memory 2020 may be a separate device from the processor 2010 or may be integrated into the processor 2010.

Optionally, the chip 2000 may further comprise an input interface 2030. The processor 2010 may control the input interface 2030 to communicate with other devices or chips, and specifically, may obtain information or data sent by the other devices or chips.

Optionally, the chip 2000 may further include an output interface 2040. The processor 2010 may control the output interface 2040 to communicate with other devices or chips, and in particular, may output information or data to the other devices or chips.

Optionally, the chip may be applied to the first relay device in the embodiment of the present application, and the chip may implement a corresponding process implemented by the terminal device in the method 200 in the embodiment of the present application, and for brevity, no further description is given here.

It should be understood that the chips mentioned in the embodiments of the present application may also be referred to as a system-on-chip, a system-on-chip or a system-on-chip, etc.

Fig. 13 is a schematic block diagram of a chip 3000 according to an embodiment of the present application. The chip 3000 shown in fig. 13 includes a processor 3010, and the processor 3010 may call and run a computer program from a memory to implement the method 300 in the embodiment of the present application.

Optionally, as shown in fig. 13, the chip 3000 may further include a memory 3020. From the memory 3020, the processor 3010 may call and run a computer program to implement the method in the embodiment of the present application.

The memory 3020 may be a separate device from the processor 3010 or may be integrated in the processor 3010.

Optionally, the chip 3000 may further include an input interface 3030. The processor 3010 may control the input interface 3030 to communicate with other devices or chips, and specifically, may obtain information or data sent by the other devices or chips.

Optionally, the chip 3000 may further include an output interface 3040. The processor 3010 may control the output interface 3040 to communicate with other devices or chips, and in particular, may output information or data to the other devices or chips.

Optionally, the chip may be applied to the second relay device in this embodiment, and the chip may implement the corresponding process implemented by the terminal device in the method 300 in this embodiment, which is not described herein again for brevity.

Fig. 14 is a schematic block diagram of a chip 4000 according to an embodiment of the application. The chip 4000 shown in fig. 14 includes a processor 4010, and the processor 4010 can call and run a computer program from a memory to implement the method 400 in the embodiment of the present application.

Optionally, as shown in fig. 14, the chip 4000 may further include a memory 4020. The processor 4010 may call and run a computer program from the memory 4020 to implement the method in the embodiment of the present application.

The memory 4020 may be a separate device from the processor 4010, or may be integrated in the processor 4010.

Optionally, the chip 4000 may further include an input interface 4030. The processor 4010 may control the input interface 4030 to communicate with other devices or chips, and specifically, may obtain information or data sent by the other devices or chips.

Optionally, the chip 4000 may further include an output interface 4040. The processor 4010 can control the output interface 4040 to communicate with other devices or chips, and in particular, can output information or data to other devices or chips.

Optionally, the chip may be applied to the network device in the embodiment of the present application, and the chip may implement the corresponding process implemented by the network device in the method 400 in the embodiment of the present application, and for brevity, no further description is given here.

Fig. 15 is a schematic block diagram of a communication system 5000 according to an embodiment of the present application. As shown in fig. 15, the communication system 5000 includes a first relay device 5010 and a second relay device 5020. The first relay device 5010 is configured to acquire first information, where the first information is used to indicate transmission resources of a first signal, and send the first signal according to the first information;

the second relay device 5020 is configured to send first information to the first relay device, where the first information is used to indicate transmission resources of the first signal.

The first relay device 5010 may be configured to implement corresponding functions implemented by the first relay device in the method 200, and the composition of the first relay device 5010 may be as shown in the relay device 500 in fig. 6, which is not described herein again for brevity.

The second relay device 5020 may be configured to implement the corresponding functions implemented by the second relay device in the method 300, and the composition of the second relay device 5020 may be as shown in the relay device 600 in fig. 7, which is not described herein again for brevity.

Fig. 16 is a schematic block diagram of a communication system 6000 according to an embodiment of the present application. As shown in fig. 16, the communication system 6000 includes a first relay apparatus 6010 and a network apparatus 6020. The first relay device 6010 is configured to acquire first information, where the first information is used to indicate a transmission resource of a first signal, and send the first signal according to the first information;

the network device 6020 is configured to transmit first information to the first relay device, the first information indicating transmission resources of the first signal.

The first relay device 6010 may be configured to implement the corresponding functions implemented by the first relay device in the method 200, and the composition of the first relay device 6010 may be as shown in the relay device 600 in fig. 6, which is not described herein again for brevity.

The network device 6020 may be configured to implement the corresponding functions implemented by the network device in the method 400, and the components of the network device 6020 may be as shown in the network device 600 in fig. 8, which are not described herein again for brevity.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the unit is only one logical functional division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.

This functionality, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to perform all or part of the steps of the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

A method for transmitting signals, the method being applied to a relay system, the method comprising:

the method comprises the steps that first relay equipment acquires first information, wherein the first information is used for indicating transmission resources of a first signal;

and the first relay equipment transmits the first signal according to the first information.
The method according to claim 1, wherein the relay system comprises a plurality of hierarchies, and the first information is used for indicating a correspondence relationship between each hierarchy of the plurality of hierarchies and a transmission resource of the first signal, or the first information is used for indicating a transmission resource of the first signal allocated to the first relay device;

the first relay device transmits the first signal according to the first information, and the method includes:

the first relay device transmits the first signal on a transmission resource of the first signal corresponding to a hierarchy of the first relay device in the relay system according to the first information, or

And the first relay equipment transmits the first signal on the transmission resource of the first signal allocated to the first relay equipment according to the first information.
The method of claim 1 or 2, wherein the first relay device obtains first information comprising:

the first relay device receives the first information sent by a second relay device or a network device, wherein the second relay device is a father node of the first relay device; alternatively, the first and second electrodes may be,

the first information is pre-stored in the first relay device.
The method of claim 3, further comprising:

the first relay device determines the second relay device.
The method of claim 4, further comprising:

the first relay device determining a hierarchy of the second relay device in the relay system;

the first relay device determines a hierarchy next to a hierarchy in which the second relay device is located as a hierarchy of the first relay device in the relay system.
The method of claim 5, wherein the first relay device determining a hierarchy of the second relay device in the relay system comprises:

and the first relay equipment determines the hierarchy of the second relay equipment in the relay system according to the first information and the transmission resource of the first signal sent by the second relay equipment.
The method of claim 5, wherein the first signal is a synchronization signal, and wherein the first relay device determines a hierarchy of the second relay device in the relay system, comprising:

and the first relay equipment determines the hierarchy of the second relay equipment in the relay system according to the corresponding relation between the synchronization sequence and each hierarchy in the relay system and the synchronization sequence corresponding to the synchronization signal sent by the second relay equipment.
The method of any of claims 4 to 7, wherein the first relay device determining the second relay device comprises:

the first relay device receiving at least one of the first signals, the at least one first signal being transmitted by at least one relay device;

the first relay device determines the second relay device according to the at least one first signal.
The method of claim 8, wherein the at least one first signal comprises K first signals, K being a positive integer greater than or equal to 1, and wherein the first relay device determines a second relay device based on the at least one first signal, comprising:

the first relay device measures the strength of the K first signals;

and the first relay equipment determines the second relay equipment according to the strength of the K first signals.
The method of claim 8, wherein the at least one first signal comprises K first signals, K being a positive integer greater than or equal to 1, and wherein the first relay device determines a second relay device based on the at least one first signal, comprising:

the first relay equipment determines at least one hierarchy where the relay equipment sending the K first signals is located according to the K first signals;

the first relay device determines the second relay device according to the size of the at least one hierarchy level.
The method of claim 8, wherein the at least one first signal comprises K first signals, K being a positive integer greater than or equal to 1, and wherein the first relay device determines a second relay device from the at least one first signal, comprising:

the first relay equipment determines at least one hierarchy where the relay equipment sending the K first signals is located according to the K first signals;

the first relay device determining a first tier from the at least one tier;

if J relay devices of the first hierarchy transmit M first signals of the K first signals, the first relay device measures intensities of the M first signals, where M is a positive integer less than or equal to K, and J is a positive integer less than or equal to M;

and the first relay equipment determines the second relay equipment according to the strength of the M first signals.
The method according to any one of claims 1 to 11, wherein the first signal is a synchronization signal, and the first relay device transmits the first signal according to the first information, comprising:

and the first relay equipment sends a synchronization sequence corresponding to the hierarchy where the first relay equipment is located according to the first information and the corresponding relation between the synchronization sequence and each hierarchy in the relay system.
The method according to any of claims 1 to 12, wherein the first information is used for indicating transmission resources of the first signal allocated to the first relay device, the method further comprising:

the first relay device receives second information sent by a second relay device, the second information being used for indicating transmission resources of the first signal of at least one hierarchy above a hierarchy where the first relay device is located, and the second relay device being a parent node of the first relay device.
The method according to any of claims 1 to 13, wherein the first information is carried in a broadcast message, radio resource control, RRC, signaling or downlink control information, DCI.
The method according to any of claims 11 to 14, wherein the first signal is a synchronization signal, a tracking reference signal, TRS, or a channel state information-reference signal, CSI-RS.
A method for transmitting signals, the method being applied to a relay system, the method comprising:

the second relay equipment sends first information to the first relay equipment, wherein the first information is used for indicating the transmission resource of the first signal.
The method of claim 16, wherein the second relay device is a parent node of the first relay device.
The method according to claim 16 or 17, wherein the relay system comprises a plurality of levels, and the first information is used for indicating transmission resources of the first signal corresponding to each level in the plurality of levels, or the first information is used for indicating transmission resources of the first signal allocated to the first relay device.
The method according to any of claims 16 to 18, wherein the first information is used for indicating transmission resources of the first signal allocated to the first relay device, the method further comprising:

the second relay apparatus transmits, to the first relay apparatus, second information indicating transmission resources of the first signal of at least one hierarchy above a hierarchy in which the first relay apparatus is located.
The method according to any of claims 16 to 19, wherein the second relay device sends the first information to the first relay device, comprising:

and the second relay equipment sends the first information to the first relay equipment through broadcast messages, Radio Resource Control (RRC) signaling or Downlink Control Information (DCI).
The method according to any of claims 16 to 20, wherein the first signal is a synchronization signal, a tracking reference signal, TRS, or a channel state information-reference signal, CSI-RS.
A method for transmitting signals, the method being applied to a relay system, the method comprising:

the network equipment sends first information to first relay equipment, wherein the first information is used for indicating that the first information is used for indicating transmission resources of a first signal.
The method of claim 22, wherein the relay system comprises a plurality of levels, and wherein the first information is used for indicating transmission resources of the first signal corresponding to each level in the plurality of levels, or the first information is used for indicating transmission resources of the first signal allocated to the first relay device.
The method according to claim 22 or 23, wherein the network device sends the first information to the first relay device, comprising:

and the network equipment sends the first information to the first relay equipment through a broadcast message, Radio Resource Control (RRC) signaling or Downlink Control Information (DCI).
The method according to any of claims 22 to 24, wherein the first signal is a synchronization signal, a tracking reference signal, TRS, or a channel state information-reference signal, CSI-RS.
A relay device, wherein the relay device is used in a relay system, and the relay device is a first relay device, and the relay device includes:

an obtaining unit, configured to obtain first information, where the first information is used to indicate a transmission resource of a first signal;

and the sending unit is used for sending the first signal according to the first information.
The relay device according to claim 26, wherein the relay system comprises a plurality of hierarchies, and the first information is used for indicating a correspondence relationship between each hierarchy of the plurality of hierarchies and a transmission resource of the first signal, or is used for indicating a transmission resource of the first signal allocated to the first relay device;

the sending unit is specifically configured to:

transmitting the first signal on a transmission resource of the first signal corresponding to a level of the first relay device in the relay system according to the first information, or

And transmitting the first signal on the transmission resource of the first signal allocated to the first relay equipment according to the first information.
The relay device according to claim 26 or 27, wherein the obtaining unit is specifically configured to:

receiving the first information sent by a second relay device or a network device, wherein the second relay device is a parent node of the first relay device; or the like, or, alternatively,

the first information is pre-stored in the first relay device.
The relay device of claim 28, wherein the relay device further comprises:

a first determining unit configured to determine the second relay device.
The relay device of claim 29, wherein the relay device further comprises:

a second determining unit configured to determine a hierarchy of the second relay device in the relay system;

a third determining unit, configured to determine a hierarchy next to a hierarchy in which the second relay apparatus is located as a hierarchy of the first relay apparatus in the relay system.
The relay device according to claim 30, wherein the second determining unit is specifically configured to:

and determining the hierarchy of the second relay equipment in the relay system according to the first information and the transmission resource of the first signal sent by the second relay equipment.
The relay device according to claim 30, wherein the first signal is a synchronization signal, and the second determining unit is specifically configured to:

and determining the hierarchy of the second relay equipment in the relay system according to the corresponding relation between the synchronization sequence and each hierarchy in the relay system and the synchronization sequence corresponding to the synchronization signal sent by the second relay equipment.
The relay device according to any one of claims 29 to 32, wherein the first determining unit is specifically configured to:

receiving at least one of the first signals, the at least one first signal being transmitted by at least one relay device, and determining the second relay device based on the at least one of the first signals.
The relay device according to claim 33, wherein said at least one first signal includes K first signals, K being a positive integer greater than or equal to 1, and wherein said first determining unit determines said second relay device based on said at least one first signal includes:

measuring the strength of the K first signals;

and determining the second relay equipment according to the strength of the K first signals.
The relay device according to claim 34, wherein said at least one first signal includes K first signals, K being a positive integer greater than or equal to 1, and wherein said first determining unit determines said second relay device based on said at least one first signal includes:

determining at least one level where the relay equipment which is in one-to-one correspondence with the K first signals is located according to the K first signals;

determining the second relay device according to the size of the at least one tier.
The relay device according to claim 34, wherein said at least one first signal includes K first signals, K being a positive integer greater than or equal to 1, and wherein said first determining unit determines said second relay device based on said at least one first signal includes:

determining at least one level where the relay equipment which is in one-to-one correspondence with the K first signals is located according to the K first signals;

determining a first level from the at least one level;

if J relay devices of the first hierarchy transmit M first signals in the K first signals, measuring the strength of the J first signals, wherein M is a positive integer smaller than or equal to K, and J is a positive integer smaller than or equal to M;

and determining the second relay equipment according to the strength of the M first signals.
The relay device according to any one of claims 26 to 36, wherein the first signal is a synchronization signal, and the transmitting unit is specifically configured to:

and sending a synchronization sequence corresponding to the hierarchy where the first relay equipment is located according to the first information and the corresponding relation between the synchronization sequence and each hierarchy in the relay system.
The relay device according to any one of claims 26 to 37, wherein the first information is used for indicating transmission resources of the first signal allocated to the first relay device, and wherein the relay device further comprises:

a receiving unit, configured to receive second information sent by the second relay device, where the second information is used to indicate a transmission resource of the first signal of at least one hierarchy above a hierarchy where the first relay device is located, and the second relay device is a parent node of the first relay device.
The relay device according to any of claims 26 to 38, wherein the first information is carried in a broadcast message, radio resource control, RRC, signaling or downlink control information, DCI.
The relay device according to any of claims 26 to 39, wherein said first signal is a synchronization signal, a Tracking Reference Signal (TRS) or a channel State information-reference signal (CSI-RS).
A relay device for transmitting a signal, wherein the relay device is used in a relay system, and the relay device is a second relay device, and the relay device includes:

a sending unit, configured to send first information to a first relay device, where the first information is used to indicate a transmission resource of a first signal.
The relay device of claim 41, wherein the second relay device is a parent node of the first relay device.
The relay device according to claim 41 or 42, wherein the relay system comprises a plurality of hierarchies, and the first information is used for indicating transmission resources of the first signal corresponding to each hierarchy of the plurality of hierarchies, or the first information is used for indicating transmission resources of the first signal allocated to the first relay device.
The relay device according to any of claims 41 to 43, wherein the first information is used to indicate transmission resources of the first signal allocated to the first relay device, and wherein the sending unit is further configured to:

transmitting second information to the first relay device, the second information indicating transmission resources of the first signal of at least one hierarchy above a hierarchy in which the first relay device is located.
The relay device according to any of claims 41 to 44, wherein the transmitting unit is specifically configured to:

and the second relay equipment sends the first information to the first relay equipment through broadcast messages, Radio Resource Control (RRC) signaling or Downlink Control Information (DCI).
The relay device according to any of claims 41-45, wherein said first signal is a synchronization signal, a Tracking Reference Signal (TRS) or a channel state information-reference signal (CSI-RS).
A network device, wherein the network device is applied in a relay system, and the network device comprises:

a sending unit, configured to send first information to a first relay device, where the first information is used to indicate that the first information is used to indicate a transmission resource of a first signal.
The network device of claim 47, wherein the relay system comprises a plurality of levels, and wherein the first information is used for indicating transmission resources of the first signal corresponding to each level in the plurality of levels, or the first information is used for indicating transmission resources of the first signal allocated to the first relay device.
The network device according to claim 47 or 48, wherein the sending unit is specifically configured to:

and the network equipment sends the first information to the first relay equipment through a broadcast message, Radio Resource Control (RRC) signaling or Downlink Control Information (DCI).
The network device of any one of claims 47 to 49, wherein the first signal is a synchronization signal, a Tracking Reference Signal (TRS), or a channel State information-reference signal (CSI-RS).
A relay device, characterized in that it comprises a processor and a memory for storing a computer program, the processor being adapted to invoke and run the computer program stored in the memory, performing the method of any of the claims 1 to 15.
A relay device, characterized in that it comprises a processor and a memory for storing a computer program, the processor being adapted to invoke and run the computer program stored in the memory, performing the method of any of the claims 16 to 21.
A network device comprising a processor and a memory, the memory storing a computer program, the processor being configured to invoke and execute the computer program stored in the memory to perform the method of any of claims 22 to 25.
A computer-readable storage medium, characterized in that the storage medium is used to store a computer program which causes a computer to perform the method of any of the claims 1 to 15.
A computer-readable storage medium, characterized in that the storage medium is used to store a computer program which causes a computer to perform the method of any of the claims 16 to 21.
A computer-readable storage medium, characterized in that the storage medium is used to store a computer program which causes a computer to perform the method of any of the claims 22 to 25.
A chip, comprising: a processor for calling and running a computer program from a memory so that a device on which the chip is installed performs the method of any one of claims 1 to 15.
A chip, comprising: a processor for calling and running a computer program from a memory so that a device on which the chip is installed performs the method of any one of claims 16 to 21.
A chip, comprising: a processor for calling and running a computer program from a memory so that a device on which the chip is installed performs the method of any one of claims 22 to 25.
A communication system comprising a first relay device and a second relay device;

the first relay equipment is used for acquiring first information, wherein the first information is used for indicating transmission resources of a first signal and sending the first signal according to the first information;

the second relay device is configured to send first information to the first relay device, where the first information is used to indicate a transmission resource of the first signal.
A communication system comprising a first relay device and a network device;

the first relay equipment is used for acquiring first information, wherein the first information is used for indicating transmission resources of a first signal and sending the first signal according to the first information;

the network device is configured to send first information to a first relay device, where the first information is used to indicate a transmission resource of a first signal.